Circle has expanded its Cross-Chain Transfer Protocol (CCTP) to support ERC-20 tokens beyond USDC, enabling any token issuer to connect existing assets or launch new CCTP-compatible tokens across multiple blockchains. The protocol uses a burn-and-mint model, destroying tokens on the source chain and minting equivalent amounts on the destination chain to ensure seamless cross-chain transfers. Circle has also released a technical guide detailing how developers can implement the feature on the Arc blockchain testnet, signaling broader infrastructure readiness for multi-chain token interoperability.